Privacy Preserving System for Real-Time Enriched-Integrated Service with Feedback to Providers. - Kaisei Kajita; Kazuto Ogawa; Go Ohtake (HCI (29), 2019)

Short Lattice Signatures in the Standard Model with Efficient Tag Generation. - Kaisei Kajita; Kazuto Ogawa; Koji Nuida; Tsuyoshi Takagi (ProvSec, 2020)

Sharing Same Elements in User Viewing History Data Securely Through Private Set Intersection Under User-centric Data Control. - Shuhei Taguchi; Chigusa Yamamura; Hisayuki Ohmata; Daisuke Sekine; Kaisei Kajita; Arisa Fujii (IMX, 2020)

A Constant-Size Signature Scheme with a Tighter Reduction from the CDH Assumption. - Kaisei Kajita; Kazuto Ogawa; Eiichiro Fujisaki (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2020)

Privacy-Preserving System for Enriched-Integrated Service. - Kaisei Kajita; Go Ohtake; Kazuto Ogawa (IEICE Trans. Inf. Syst., 2021)

Private Set Intersection for Viewing History with Efficient Data Matching. - Kaisei Kajita; Go Ohtake (HCI (40), 2022)

Membership Privacy for Asynchronous Group Messaging. - Keita Emura; Kaisei Kajita; Ryo Nojima; Kazuto Ogawa; Go Ohtake (IACR Cryptol. ePrint Arch., 2022)

Continuous Group Key Agreement with Flexible Authorization and Its Applications. - Kaisei Kajita; Keita Emura; Kazuto Ogawa; Ryo Nojima; Go Ohtake (IACR Cryptol. ePrint Arch., 2022)

Providing Membership Privacy to the Asynchronous Ratcheting Trees Protocol without losing Scalability. - Keita Emura; Kaisei Kajita; Ryo Nojima; Kazuto Ogawa; Go Ohtake (J. Wirel. Mob. Networks Ubiquitous Comput. Dependable Appl., 2022)

Privacy-Preserving Data Management and Provision System for Personal Data Store. - Kaisei Kajita; Kinji Matsumura; Go Ohtake (HCI (45), 2023)

Short Lattice Signature Scheme with Tighter Reduction under Ring-SIS Assumption. - Kaisei Kajita; Go Ohtake; Kazuto Ogawa; Koji Nuida; Tsuyoshi Takagi (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2023)

Consecutive Adaptor Signature Scheme: From Two-Party to N-Party Settings. - Kaisei Kajita; Go Ohtake; Tsuyoshi Takagi (ProvSec (1), 2024)

EncPDS: Encrypted Personal Data Stores via Key-Aggregate ID-Based Proxy Re-Encryption. - Kaisei Kajita; Go Ohtake (SIN, 2024)

Generalized Adaptor Signature Scheme: From Two-Party to N-Party Settings. - Kaisei Kajita; Go Ohtake; Tsuyoshi Takagi (IACR Cryptol. ePrint Arch., 2024)

Outsider-Anonymous Broadcast Encryption with Keyword Search: Generic Construction, CCA Security, and with Sublinear Ciphertexts. - Keita Emura; Kaisei Kajita; Go Ohtake (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2024)